overcurrent protection
b. Every caravan pitch must have least one 16A socket outlet for
connection caravan. only competent people may work ‘live’
d. only instructed and skilled people may work ‘live’.
21.
. everyone may work ‘live’
b. The Electricity Work Regulations state that:
a. protected from overcurrent
c.
24. continuity test
b.
23. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V system. the industrial type
b. Zone protection.
22. earth fault loop impedance
c. Use sketch with notes explanation show the earthing and
protective bonding arrangements the mains intake position a
230V cable sheath supply. protected additionally RCD
d. one may work ‘live’
c. buried depth 600mm. functional test
d.365
U W
6 6
2 2
C1
L1 C1
2
C3
4
5
6
To phase supply
To phase motor
19.
20. Use sketch with notes explanation show how mini-trunking and
skirting trunking could used contain all the electrical supplies a
school’s computing classroom. Identify from the list below the test which used verify that all fuses,
circuit breakers and switches are connected the line conductor:
a. RCD protection
c.
26. IPX7 protection
d.
27.
25. The socket outlet must be:
a. Compare PVC/SWA cables with cables and give their advantages,
disadvantages and typical applications. All final circuits bathroom, both power and lighting, must have:
a. polarity test. State the advantages conduit trunking and tray cable enclosure
system for commercial installation such shopping centre
